Spabk-plug



D. MARGOUNSKY.

SPARK PLUG.

1,316,053, Q IatentedSept. 16, 1919.

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DAVID MARGOLINSKY, OF COLUMBUS, OHIO.

SPARK-PLUG.

Specification of Letters Patent.

Patented Sept. 16, 1919.

Application tiled December 11, 1918. Serial No. 266,191.

To all whom t may concern.'

Be it known that I, DAvio MARGoLiNsKY, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Spark-Plugs, of which the following is a specification.

This invention relates to spark plugs and is designed with the object in view of maintaining the firing points in a thoroughly cleansed condition to thereby be assured of a positive spark each time an engine charge is to be fired. I also aim to provide a structure wherein the intensity of the spark is increased to a marked degree over those plugs now generally in use.

The main object of my invention therefore resides in the combination with a plurality of firing points or elements of a member capable of being vibrated and thus brought into rubbing contact with the firing points during the normal operation of the engine.

The preferred embodiment of my invention is shown in the accompanying sheet of drawings wherein similar characters of reference designate corresponding parts and wherein:

Figure 1 is a view in side elevation, with parts broken away, of my improved type of plu Fgig. 2 is a bottom View of the structure shown in Fig. 1, and

Fig. 3 is a partial elevation of a modified type of structure.

In the drawings, there is shown a bushing body 1 provided with threads on its exterior surface to enable it be readily applied to the head of an engine cylinder and drawn tight in such position by means of the hexagonally formed head portion 2. The interior of the bushing 1 is suitably formed in a manner Well known in the art to receive the porcelain core 3, this latter being held in applied position by means of the tightening nut 4. This porcelain core 3 forms themeans by which the high tension electrode 5 is introduced into the interior of the body 1, `the high tension Wires leading from any suitable source of current supply being connected thereto by means of the threaded nut 6 in the conventional manner. The portion 7 of the porcelain core which is located within the interior of the body 1 is provided with a transverse opening 8of such size and shape to intersect the positive electrode 5. Where this electrode passes through the opening 8, it is split or divided as shown at 9 to thus provide what is known as an intensifier structure, the advantage of which will be later pointed out. The body 1 is also provided with a plurality of ground i electrodes 10 whose inner ends are shaped as shown at 11 to form an inclosure and whose firing points 12 are disposed adjacent the end of the high tension electrode 5. The portions 11 forming the inclosure loosely confine a ball or equivalent vibratable element 13 made of nonconducting material. It is intended this ball shall be confined in such manner as to enable it to vibrate up and down in synchronism with the vibrations inherent in all internal combustion engines and during such vibrations to come into physical contact with all of the firing points, both on the high tension and the ground electrodes and by such contact to effect a rubbing operation suflicient to keep the firing points clean to at all times be assured of the proper firing.

The intensifier structure located in the lower end of the porcelain core has the additional advantage of providing a second firing point which, because of its location within the interior of the bushing body positively insures the complete combustion of any of the charge which may be pocketed therein and in this manner eliminates the collection of foul gases and carbon. This feature additionally assures the maintenance of clean firing points. Also, because of this second gap, a hotter spark is produced as will be clearly recognized by those versed in the art.

As shown in Fig. 3, the high tension electrode 5 is continued and given a semi-circular bend 14 and the ground electrodes 10 are given a bend in a direction reverse from that shown in Fig. 1 as is indicated at 1'5. These bends operate in substantially the same manner as for the structure shown in Fig. 1, namely, from the end inclosure Within which the non-conducting ball 13 is confined but in this case, the electrode ends are located at the under side of the ball in which case the firing point of the plu is located closer to the interior of the cy inder. Because of the non-conductin nature of the 'ball 13, short circuiting of ue electrodes is impossible and in this modified form as well as in the structure shown in Fig. 1, assurance is hadof the proper burning of whatever mixture may be pocketed within the bushing 1 because of the intensifier structure.

What I claim is:

1. In a spark plug, a bushing body, high tension and ground electrodes, said electrodes being shaped to dene an inclosure, and a non-conducting vibratable ball confined in said closure nsueh position to rub the sparking points of said electrodes.

2. In a spark plug, a bushing Ibody, a high tension electrode insulated from and entering said bushing centrally, a plurality of ground electrodes carried by said bushing, said electrodes being shaped and disposed to define an inclosure, and a non-conducting ball loosely confined in said inclosure to be capable of rubbing the sparking points of said electrodes.

3. In a spark plug, a blushing body a high tension electrode insulated from and entering said bushing centrally, a plurality of ound electrodes wires carried by said bushing and shaped to form an inclosure with their ends adjacent said high tension electrode, and a non-conducting ball confined within said inclosure to enable it to rub said electrode ends.

4. In a spark plug, a bushing body, a high tension electrode insulated from and entering said bushing centrally, a plurality of round electrodes carried by said bushing, an mclosure structure coperative with said Cepies o! this patent may 'ne obtained for electrodes, and a conducting vibratable ball confined Within said structure in such position as to clear the sparking gaps of said eleptrodes of extraneous matter.

n a spark lu a bushin bod a orcelain core heldp Wigthin said odya iliigh tension electrode carried by said core, the portion of said core projecting into said body having an opening leading into the surrounding space and intersecting said electrede, said electrode being split at the point where it passes through said opening to present a spark gap, and a ground electrode structure disposed to give an additional spark gap.

6. In a spark plug, a bushngbody,apor celain core held Within said body, a high tension electrode carried by said core, a lurality of ground electrode Wires carrie by said bushing` and shaped to form an inclosure with their ends adjacent said high Joension electrode, a non-conducting ball confined Within said inclosure to enable it to rub said electrode ends, the portion of said core projecting into said body having an opening leading into the surrounding space and intersecting said electrode, said electrode being split at the point Where it asses through said opening to present a spar r gap, and a ground electrode structure disposed to give an additional spark gap.

In testimony whereof I aiiix my signature.

DAVID MARGr()LINSKY.y

five cents each, by addressing the Commissioner of Patents.

Washington, D. G.

It is hereby certified that in Letters Patent N0. lGJlli, grainlld Szptvmbvr 15,

1919, upon the application of David Mnrgnlinsky, nl' Columbus, Ohio, for un improvement in "Spark-Plugs, an error nppvzirs in Llw printed spvcilicnbion requiring correction :is follows; Page 2,(:lfiim 4,1inu 2H, for thv wnril "cmulucting" read nnucmuluring/,' mul that the said Letters Patent should be remi with this correction therein Llmt. the sume may conform Lo the record uf the ense in the Patent OIIice.

Signed and sealed this 11th day of November, A. 1)., 1919.

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